循环中的 HttpClient答案

【问题标题】：HttpClient in a loop循环中的 HttpClient
【发布时间】：2020-04-25 05:37:55
【问题描述】：

我正在使用 Apache HttpClient 在批处理（独立）JAVA 程序中调用 API。下面是代码

HttpClient httpClient = new HttpClient();
httpClient.getParams().setIntParameter("http.connection.timeout",5000);
PostMethod postMethod = new PostMethod("http://localhost:8080/endpoint");

for (String strRequest:listA) {
    postMethod.setRequestEntity(new StringRequestEntity(strRequest,"application/json","UTF-8"));
    postMethod.addRequestHeader("Content-Type","application/json");
    postMethod.addRequestHeader("Accept","application/json");
    int statusCode = httpClient.executeMethod(postMethod);
    if (statusCode !=200) {
        responseBodyStr = postMethod.getResponseBodyAsString();
    } else {
        responseBodyStr = postMethod.getResponseBodyAsString();
    }
    System.out.println(responseBodyStr);
}

在第二次迭代中，我收到 400（套接字超时）错误。有什么办法可以在这里重置httpClient，这样我就可以重用同一个对象。它也将有助于我的单元测试。这是代码的简化版本。实际代码根据从 API 收到的响应进行了大量处理。

【问题讨论】：

标签： java apache-commons-httpclient

【解决方案1】：

HttpClient httpClient = null;

PostMethod postMethod = new PostMethod("http://localhost:8080/endpoint");

for (String strRequest:listA) {
   httpClient = new HttpClient();
   httpClient.getParams().setIntParameter("http.connection.timeout",5000);
        postMethod.setRequestEntity(new StringRequestEntity(strRequest,"application/json","UTF-8"));
        postMethod.addRequestHeader("Content-Type","application/json");
        postMethod.addRequestHeader("Accept","application/json");
        int statusCode = httpClient.executeMethod(postMethod);
        if (statusCode !=200) {
            responseBodyStr = postMethod.getResponseBodyAsString();
        } else {
            responseBodyStr = postMethod.getResponseBodyAsString();
        }
        System.out.println(responseBodyStr);
}

你能不能试试这个。

【讨论】：

我认为每次迭代都创建一个新的PostMethod，而不是一个新的HttpClient，不是吗？